Cross-winding machine



April 15 1924. 1,490,715

' vH. SCHWEITER CROSS WINDING MACHINE Filed March 29, :922 2Sheets-Sheet 1 awe Mm, 369mm admi G 23 4 {B JLL-J%OMZAMC April 15 1924.1,490,715

H. SCHWEITER CROSS WINDING MACHINE Filed March 29, 1922 2 Sheets-Sheet 2(it torzley- 1 parts.

Fatented Apr, 15, 13924.

entree "STATES {PATENT OFFICE.

inane sonwnirna, or HUBGEN, SWITZERLAND.

cnoss winnme MACHINE.

Application filed. March 29, 1922. Serial No. 547,839.

is a specification.

This invention relates to cross winding machines in which a spool isrotated by means of a friction drum provided with a groove for drivingthe thread guide.

The main object of my invention is to provide a machine which has ahigher efii: ciency than those hitherto known and in which there is lesswear of the working I attain these objects by the mechanism illustratedin the accompanying drawings, in which- Figures 1 and 2 which arerespectively an elevation and a left hanc side view of the cross windingmachine.

Figure 3 is an enlarged section on line 3-3 of Figure 1.

Figures 41: to 6 are respectively an enlarged side view, a plan and avertical section of the thread guide. 1

Figure 7 is an enlarged detached detail view of Figure2.

Figure 8 is a vertical section on line 88 of Figure 7. a j

Figure 9 is a horizontal section on line 9-9 of Figure 2, drawn to areduced scale.

Figures 10 to 12 are respectively an enlarged side view, a plan and avertical section of a double thread guide;

The rotated drum 1 has a driving groove 2 for the thread guide 3,located at an incline to the drum axis and the rear side of the threadguide 3, is so curved that it fits the rounded contour of the drum.

A cylindrical projection 4 forced out of the rear wall of the hollowthread guide 3 engages the driving groove 2 of the drum. The front wallof the thread guide is connected by a rib with the rear wall and has avertical open groove 5, for the guidance of the thread 6. Thesubstantially circular thread guide 3 terminates at the bottom in a fiatportion and thus a sharp edge 7 substantially perpendicular to thethread is produced where the thread leaves the groove 5 whereby anytendency of the thread to ride up the edges of the lower end of thegroove 5 and leave the groove laterally during the to and fro movementof the thread guide is overcome. The front wall of the latter hasfurther an open groove 8 for the reception of a guide rod 9 whichretains the thread guide in position on thedrum duringits to and fromovement." The front wall 3' is so curved that the thread dur ing thefirst to and fro movement of the guide will enter the groove 5automatically and that on pushing the guide into its working positionfrom below, the resilient guide rod 9 will be forced outwardly by theguide and then spring into the groove 8 whereby fixing of the guide onthe drum is considerably facilitated. In order torernove the threadguide from the drum, all that is necessary is to slightly bend therod 9o'utwardly and to slide the guide upwards or downwards. I Owing to theweight of the metal thread guide being only about two grammes,it canoperate without shocks and noise at a very high speed, whereby theefiiciency or output of the machine is considerably increased.

The guide rod 9 is carried by two adjustably fixed arms 11, Figures 2and 7 to 9, and by angular adjustment of the arms 1' 11 on the shaft 10,the distance of the rod 9 and therefore of the'thread guide from theplace of contact of the spool 12 or material 12 (Figure 3) wound onthe'spool'with the drum 1 can be varied.

In order to permit of regulating the distance between the guide rod 9and the drum and thereby the degree of contact of the thread guide withthe drum, each end of the rod is mounted in a radial slot 13 in acylindrical part 14 mounted in the respective arm 11.

The slot 13 is engaged by a short tongue 15 provided on a plate 17 whichrests on the part 14 and is formed with a slot 16 (Figures 7 and 8). Byadjustment of this plate on arm 11, the part 1 1 is turned in the arm 11and the rod 9 is thereby caused to approach or recede from the drum 1.After the rod 9 has been set at the correct distance from the drum it islocked in position by tightening screws 18 which engage the slot 16 ofthe plate 17 and by tightening a nut 19 which screws on the part 14. Thenut 19 is locked by engagement in the groove 21 of the nut, of theforked channel like and resilient ends 20 on the plate 17.

Figures 13 and 14 show a thread guide 3 which is separated by apartition 30 into two grooves 5 and 5' for two threads where the drum;at least one open groove in the frontside of the guide to guide thethread; a guiding and holding member for the guide; and an open groovein the front side of the guide for the reception of the said guiding andholding member.

2. In a cross winding machine adapted to rotate aspool by means of afriction drum provided with a driving groove for a thread guide, athread guide; and a resilient rod adapted to serve as a guide for thethread guide and removably hold it in sliding contact with the peripheryof the drum.

3. In a cross winding machine adapted to rotate a spool by means of afriction drum provided with a driving groove for the thread guide, athread guide; a groove in the front of the thread guide; a resilientholder for the guide; and a curved front surface onthe thread guideadapted by the sliding movement of the guide to automatically cause thethread to enter the said groove and to facilitate fixing and removal ofthread guide on and from the drum by a bending of the resilient holder.

4:. In a cross winding machine adapted to rotate a spool by means of afriction drum provided with a driving groove for a thread guide, athread guide: a thread groove in the thread guide; and a flat side onthe thread guide parallel with the drum axis and facing the spool,whereby the thread is and conforming with the curvature of the drum.

6. In a cross winding machine having a spool rotated by friction from adrum provided withla driving groove for athread guide, a thread guide; astamped sheet metal piece formingone part of the thread guide;

guide grooves in said piece; a stamped sheet metal piece forming theother part of the thread guide and secured to the first'named piece by afolding; anda projection on the second named piece adapted to engage thedriving groove of the drum.

7. In a cross winding machine having a spool rotated by friction from adrum provided with a driving groove for a thread guide, a thread guide;two thread guiding grooves therein; and a partition separating the twogrooves.

8. In a cross winding machine having a spool rotated by friction from adrum provided with a driving groove for the thread guide; a threadguide; a guiding andholding member for said thread guide; and adjustingmeans whereby said member can b adjusted relative to the drum.

9. In a cross winding machine having a spool rotated by friction from adrum provided with a driving groove for a thread guide, a thread guide;a guiding and hold ing member for said thread guide; and adjusting meanswhereby said member can be adjusted, about the drum axis.

Signed at Zurich, in the Canton of Zurich, Switzerland, this 10th day ofMarch, 1922.

HANS SCHWEITER.

Witnesses:

HANS E. VOLLERWISKEY, OSCAR Rome.

